Son enters the home and finds his mother on the bed. He tip-toed as not to wake her up. He hears the mother whispering or mumbling something. He gets closer to hear her voice. This is what the mother was saying :

"Ya Allah ! I am now very old and blind. My husband just died. There is no mahram to lower me in my grave when I die. So please send my son to fullfill my last wish. "

This is the ending of a story where the DUA of a mother is accepted